Author: (book) Laud's Laboratory: The Diocese of Bath and Wells in the Early Seventeenth Century, 1982, The Origin and Development of Scholarly Historical Periodicals, 1986, Public Libraries in Nazi Germany, 1992 (Fraenkel prize Wiener Library., London, 1989), Change and Challenge in Library and Information Science Education, 1992, Catholicism: Popular Culture, and the Arts in Germany, 1880-1963, 2005. Contributor numerous articles to professional journals.